Datasheet

6
Construction and type overview
Frequency Range Band Frequency (MHz) Reception Channel
VHF BI 47-68 TV 2-4
VHF BII 87-108 Radio FM
VHF BIII 174-230 TV 5-12
UHF BIV 470-622 TV 21-39
UHF BV 622-862 TV 40-69
- more information in „Technical Appendix“ - page 250.
Application
Triax standard range of aerials covers the following VHF and UHF frequency bands:
Aerials
Continuous development is taking place in the field of terrestrial aerials requiring us
always to stay one step ahead. Our development and design expertise enables us to
develop new products quickly for changing markets.
TRIAX develops and produces a wide range of aerials covering the VHF and UHF
frequency bands. In our development work we utilise the latest technology of computer
simulation and testing.
TRIAX aerials are manufactured with the utmost accuracy to ensure maximum gain.
TRIAX aerials comply with the DS/EN 50083-1 standard and are fatigue tested by
exposure to more than 100,000 vibrations at the physical resonant frequency and to
salt mist in order to ensure long life even under the most hostile weather conditions.
Construction and type overview
For the mechanical construction of all TRIAX aerials a strong and stable aluminium
boom is used.The dipole and elements are mounted with a strong bracket made of
metal or plastic.
The dipole is mounted with a cable housing made of polyehtylene which is resistant
to thermal fluctuations and sunlight (UV-radiation)
The cable housing contains an impedance transformer 300/75 Ohm. Furthermore the
boom is provided with a strong mast bracket to enable mounting on the mast without
using any tools.
Types of Aerials
Triax range of BIII aerials is manufactured
in many different types as the following:
MT = Standard, horizontal
mounting, mast bracket
MTD = Standard with dual reflector,
horizontal mounting,
mast bracket
MTL = Standard, vertical mounting,
mast bracket
MTH = Lightweight, horizontal or
vertical mounting,
mast bracket
MTHD = Lightweight with dual
reflector, horizontal mounting,
mast bracket
MTHV = 3 and 4 elements. lightweight,
window bracket, horizontal or
vertical mounting
MTHV = 5 elements or FM omni,
lightweight, window bracket,
horizontal mounting